Abstract：Research purposes:There are more than 4000 railway tunnels under construction which are about 8 000 km in China.In recent years the tunnel collapse accident occasionally occurred, causing casualties, economic losses and social influence of certain. Establishing the safety grade of railway tunnel surrounding rock deformation is very important for site management. On the basis of research results at home and abroad, this paper analyzed safety monitoring data, which is supplemented by theoretical calculation and based on the safety of initial support, formulated the railway tunnel deformation control safety management numerical value. Research conclusions:(1) The current safety grade management of railway tunnel surrounding rock deformation can not integrate with the international standards. (2) By using standard design parameters and numerical simulation computation, vault settlement after excavation supporting of surrounding rock grade Ⅳ tunnel is 11 mm, the surrounding rock grade V tunnel is 19 mm, and field measurement is far larger than the value. Therefore, the deformation of tunnel surrounding rock is mainly controlled by the excavation method, the initial supporting construction quality, and the initial support closed timeliness. (3) The management of early warning level 2 and warning level 1 is carried out according to the total deformation and deformation rate of tunnel surrounding rock deformation, total deformations of grade Ⅲ are 40 mm and 80 mm respectively, grade IV are 50 mm and 100mm,grade V and VI are 75 mm and 150 mm, deformation rate are 5 mm/d and 10 mm/d. (4) The research results can be used for railway tunnel surrounding rock deformation monitoring and safety management.
张民庆，黄鸿健，吴川. 铁路隧道施工围岩变形安全等级的研究与应用[J]. 铁道工程, 2014, 31(11): 87-93.
ZHANG Min-qing,HUANG Hong-jian,WU Chuan. Study and Application of Safety Grade of Surrounding Rock Deformation in Construction of Railway Tunnel. 铁道工程, 2014, 31(11): 87-93.
[1] TB 10003—2005,铁路隧道设计规范[S]. TB 10003—2005,Code for Design of Railway Tunnel[S]. [2] TZ 231—2007,铁路隧道钻爆法施工工序及作业指南[S]. TZ 231—2007,Blasting Process and Work Guide Construction Method of Railway Tunnel Drilling[S]. [3] TB 10121—2007,铁路隧道监控量测技术规程[S]. TB 10121—2007,Monitoring and Measurement Technology for Railway Tunnel[S]. [4] TB 10304—2009,高速铁路隧道工程施工技术指南[S]. TB 10304—2009,Technical Guide of Construction of High-speed Railway Tunnel Engineering[S]. [5] 关宝树,赵勇. 软弱围岩隧道施工技术[M]. 北京:人民交通出版社,2011. Guan Baoshu,Zhao Yong. Construction Technology of Soft Rock Tunnel[M]. Beijing:China Communications Press,2011. [6] 曾蔚,张民庆. 宜万铁路隧道变形侵限原因分析与治理[J]. 铁道工程学报,2008(3):42-49. Zeng Wei,Zhang Minqing. Analyses of Causes for the Deformation Intrusion Structure Ambit of Tunnel on Yichang-Wanzhou Railway and Its Treatment[J]. Journal of Railway Engineering Society,2008(3):42-49. [7] 宋冶,王新东,王刚,等. 客运专线大断面黄土隧道施工监测技术[J]. 铁道工程学报,2010(1):52-58. Song Ye,Wang Xingdong,Wang Gang,etc. Technology for Monitoring Construction of Large Section Loess Tunnel of Passenger Dedicated Line[J]. Journal of Railway Engineering Society,2010(1):52-58.
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